This confirms that the policy is valid to access this file. This particular policy we are debugging provides access to all calls for this specific handle (by omitting any specific call in the policy, it allows all calls).

This is the JSON policy: {"handle":"KW9EJhYtS6y48Whm2S6D","expiry":1508141504}

So, we can check if the policy has permission to convert the file like this: